Nazarin ƙungiyar genome-wide (GWAS) yana nufin gano bambance-bambancen kwayoyin halitta (genotype) waɗanda ke da alaƙa da takamaiman halaye (phenotype).Nazarin GWA yana binciken alamomin kwayoyin halitta sun haye dukkanin kwayoyin halittar mutane masu yawa kuma suna tsinkayar ƙungiyoyin genotype-phenotype ta ƙididdigar ƙididdiga a matakin yawan jama'a.Ci gaba dayan kwayoyin halitta na iya yuwuwar gano duk bambance-bambancen kwayoyin halitta.Haɗe-haɗe tare da bayanan phenotypic, GWAS za a iya sarrafa shi don gano phenotype SNPs, QTLs da ɗan takara genes, wanda karfi da goyon bayan zamani dabba / shuka kiwo.SLAF dabara ce da ta ɓullo da kai mai sauƙaƙan tsarin tsarin kwayoyin halitta, wanda ke gano alamomin rarrabawar kwayoyin halitta, SNP.Wadannan SNPs, a matsayin alamomin kwayoyin halitta, ana iya sarrafa su don nazarin haɗin gwiwa tare da halayen da aka yi niyya.Dabaru ce mai tsadar gaske wajen gano hadaddun halaye masu alaƙa da bambancin kwayoyin halitta.
